Tool



I patent.

Patented July zo, 1943 TOOL Alan Brickman, Monongahela,.la., assigner to The American Steel and Wire Company oi New Jersey, a corporation o! New Jersey Application July 1s, 1942, serial no. 451,479

. 3 claims. (Cl. :i1- 5.1)

This invention is a tool for use inconnection witl. 'the installation of the safety reilector asl senibly disclosed and claimed by Patent 2,274,661,

the present application being a continuation of V an application led Janua1y'15, 1940, and bearing VSerial No. 313,955.

A specic example of Athetool is illustrated by the accompanying drawing, the various figures being as follows: f

Figure vlis a side View; f Figure 2 is a view `showing the side at the top inFigure l; i Figure 3 is a longitudinal section of the tool in action; v Figure 4 shows `for better study; and Figure 45 is across-section from the line V-V `an element of the tool removed in Figure fl.

- .More specifically, these drawings show the lens receptacle 2 inserted Ain its hole in the bracket I with its flange 3 iiush against the outside surface of the bracket, the receptacle being anchoredA in this hole by projections 8 punched out from the receptacle side wall and engaging the back side of the bracket 1, all as shown in the enumerated The illustrated tool is particularly designed to conveniently cut and punch out the projections 8 so that they will properly anchor the receptacle 2 tightly `in place in as vandalproof a manner as possible, and so that they will not permit unduewater seepage between their lips and the back of the bracket 1.

This tool has a frame IIJ from which projects a longitudinally slotted stud I I insertable through the open end'of the receptacle or shell 2. Preferably the frame `IIJ and stud I lare made of solid i integral metal, the slot I2 in the stud I I'cutting transversely entirely through the stud .and going back` into the frame I Vand then diverging to leave a solidl integral frame part I3 which is sumciently sturdy and massive to effectively maintaiii' the frame and stud as an integralunit.

Lever arms. I4 oppositely. swing radially of the stud I I in its slot I2 about pivots I5 on the frame I 0 that are axially transversely aligned with the stud side. Each lever arm I4 isprovided with a longer handle arm IB that extends backwardly f `from the frame I0, so that when the handle arms extent determined by abutments I9 formed on the insides of the lever arms I4 and which engage a pin 20 extending transversely through the slot within which the arms I4 swing.

Each of theswinging ends of. the arms I4 carries a punch projecting outwardly respecting the stud slot with a hat base2l transverse of the arm tangent an arc about the pivot axis of the pivot I5,*and with-,an outside 22 that tapers from the base 2I toward the arm end, the outwardly tapery ing outside 22 forming a sharp cornered junction 23 with the base 2 I, which works as a cutting -edge for the metal shell wall. Each' of the arms I4 is shaped between the punch base 2l and the arm pivot I5 throughout thegslot lengthv within the stud I I, to remain'at least flush with the stud side when the arm is s'wungoutwardly respecting the stud slot to cause the punch to project to shell sidewall punching position beyond the stud wall. Preferably; this portion of the arm just described, should be shaped to '-o truly flush with i the stud side when the arm is swung outwardly of the stud slot to cause the stud tol project to shell'side wall punching position beyond the stud side, the latter and this arm portion outside; indicated at 2 4, being shaped to lit the shell side wall inside contour, or, in the illustrated instance,

from the frame for better study, it being under-'- stood that the arms I4 and I6 are'preferably:

integral parts of suillcient sturdiness. -In this ligure, the transverse pivot axis is shown atA aligned with the stud side indicated by the dotted line B, and with the flat base 2| of the punch tangent an arc C about the axis A, the plane of the base 2I being indicated by the dotted line D.'

The portion 24 of the arrnv I4 is shown in line l with the axis A and theline B.` These features are important.

Inuse, the shell 2 may b e slipped over thestud I I and the tool used to place th.. shell in its hole in the bracket 1 so as to bring 'its flange 3 ilush with the outside of this-bracket. it beinguunderstood that the abutments I9 and the pin 20A are arranged so that the' spring Il forces the handles I6 apart to a degree completely retracting the punches on the ends of the arms I4,- within the slot I2. i The handle arms I6 are then squeezed together, thiscausing the sharp corners 23 of the punches to start to cut the shell closely adcoming to right angular relation with the stud side or line B. the arcs through which they work being short. As the punches continue to move outwardly, their conical sector surfaces 22 draw the metal side wall of the shell 2 into corresponding conical sectors while cutting the bases of these sectors so that they can leave the shell side wall plane, this action continuing until the portions 24 oi the two lever arms I4 engage the shell inside and stop the action. Since these portions 24 coincide with the inside shell contour, the shell cannot be unduly stressed out oi shape should the hole in the bracket 1 be somewhat too large. 'I'he result is the projections l shown in the patent, and which safely anchor the shell 2 against the removal except by means of a special tool'. The lips of the conical sector projections 8 llt tightly against the back side o! the bracket 'I due to the substantially linear -action of the punches and due to the fact that when these punches attain fullv operating positions.

I claim: n

1. A tool for punching out a projection from the side wall of an open-,ended shell and which includes a frame from which projects a longitudinally slotted stud insertable through the shell open end, said studbeing substantially the same size as the'opening, said fra'me'having a lever arm swinging radially of 'the stud in its slot,

'a pivot for said lever arm mounted on the frame,

the vaxis oi said pivot being transverse, aligned and substantially tangent thereto, v'and the stud side with the swinging arm end having a'punch projecting outwardly respecting the stud slot -with a ilat base transverse oi lthe armtangent to an arc about the 'Pivot axis and an` outside that tapers from the lbase toward the arm end and which forms 'a sha'rp'cornered junction with the base, the arm being shaped between thel punch base and the arm pivot throughout the slot length to remain at least ilush with the stud side when the arm is swungoutwardly respecting the stud slot to cause the punch to project to shell side wall punching position .beyond the their bases 2| each become normal the line B deilning the stud side and the pivot axis C aligned therewith, the very slight departures from a linear direction involved by the punches, being in a direction tending to draw the projectionsv 8 toward the back side of the bracket 1, whereby the lips of these projections bounding their bases are in substantial engagement with the bracket back side, this reducing water seepage to a minimum.

There are a large number of tools of the general character of the one herein disclosed, that have been known to the prior art for a considerable time, but all of these have involved actions capable only of bending out shell portions in such a manner that it is relatively easy to bend back the portions and remove the shell. None of them have permitted an approach to a linear punch action excepting those involving compllcated reciprocating cam actions involving much greater manufacturing costs and such a loss vof simplicity as to render them unreliable for neld use. The conical sectors punched out by the present tool cannot be displaced by punching sign providing for a punch that operates in a substantially linear fashion to cut and draw the projection as described, as contrasted to bending or tearing out portions of .the shell by, an excentric swinging punch operating more like a bending or pulling hook. Y

1 s cone sector. r

stud side.

2. A tool for4 punching out a projection from the side-,wall of an open-ended shell and which includes a frame from which i projects a longitudinally slottedstud insertable through the shell open end, said stud being substantially the same size as the opening, said frame having a lever arm swinging radially of the vstud in its slot. a pivot .for said -lever ann mounted on the frame,

the axis of said pivot being transverse, aligned' vand substantially tangent thereto, and the stud side with the swinging arm end having a punch projecting outwardly respecting the stud slot with a at base transverse of the arm tangent an arc about the pivot axis and an outside that tapers from the base toward the arm end and which forms a sharp cornered junction with thevl `arm outside being shaped to nt the shell side' wall inside contour.

3. A tool for punching out a projection from the side wall of an open-ended shell and which includes a frame from which projects a longitudinally slotted stud insertable through the shell open end, saidl stud being-substantially the sam'e size as the opening, said frame having a lever` arm swinging radially of the stud in its slot, a pivot for said lever arm mounted on the frame, the axis of said pivot being transverse, aligned and substantially tangent thereto. and the stud side with the' swinging arm end having a punch projecting outwardly respecting the stud slot with a ilat base transverse of the arm tangent an arc about the pivot axis and an outside that tapers from the base toward the arm end and which forms a sharp cornered-junction with the base, the ann being shaped between the punch base and the arm pivot throughout the slot length to remain at least ilush with the stud side when the arm is swung outward respectingthe stud slot to cause the punch to project to shell side wall punching position beyond the stud side, the punch outsidev being at least approximately ALAN- n Brucxwm. 

